Eobeet bbass



(No Model.)

B. BRASS.

GROMMET. 7 No. 370,924. Patented Oct. 4, 1887.

' WIN/E8858:

AM; y W

' urea/ms.

N. PETERS. Pmwmhn n mr. nnnnn nnnnn c.

UNITED STATES PATENT @FFIGE.

ROBERT BRASS, OFBROOKLYN, new YORK, ASSIGNOR TO JOHN BOYLE-OF SAME PLACE.

GRONIMET.

SPECTPICATTON forming art of Letters Patent No. 370,924, dated October 4, 1887.

Application filed March 9, 1887. Serial No. 230,178. (No model.)

flanged thimble, a ring retained by said thimble, and an intermediate pronged washer, the prongs of which pierce the fabric and are clinched between the flange of the thimble and the ring.

In the accompanying drawings, Figure 1 represents a vertical central section of myimproved grommet. Figs. 2 and 3 are bottom views of the intermediate pronged washer, which forms part of the grommet; and Fig. 4 is a vertical transverse section, on line 00 at, of thewasher Shown in Fig. 3.

Similar letters of reference indicate corresponding parts.

Referring to the drawings, (t represents a flanged thimble or male part, and b the ringshaped female part, of my improved grommet. Between the flange of the thimble a and ring I) is interposed apronged washer, d. The prongs d of the washer d are forced through the fabric and clinched when the shank of the thimble isclinched in the usual manner over the ring. The prongs d of the washer d may be either formed at the edge, as shown in Fig. 2, or punched out from the body of the washer, as shown in Figs. 3 and 4-.

When the grommet has to be attached to the fabric-such as a saila hole is first pierced, the washer placed in position on the shank of the thimble, the shank of the thimble or passed through the hole of the fabric, the ring I) placed on the shank of the thimble at the opposite side of the fabric, and then the shank or eyeof the thimble clinched over the fabric and ring by suitable dies. Simultaneously the piercing of the fabric is produced by the prongs of the washer and the clinching of the same, so that they firmly grip the fabric and enable the grommet to resist great strains exerted thereon.

The pronged washer may be made of metal or other suitable material, or in the shape of awire ring having barbed or protruding points, or of metal points, held in position by means of a washer of paper, cloth, rubber, leather, or other material of sufiicient consistency and strength. The pronged washer is held in position on the fabric by the thimble and ring' of the grommet, which fully inclose the washer and establish a rigid connection with the fabric, by the piercing of the fabric by the prongs and the clinching of the prongs.

- The pronged washer can be used on any grommet heretofore in use, and increases the rigid connection of the same with the fabric and the resistance of the same to strain in a higlrdegree.

Havingthus described my invention, I claim as new and desire to secure by Letters Patcut- A grommet composed of a flanged thimble, 

